Question

39(2х-4)-14=2×(39х+3)

Answer 1

78x - 156 - 14 = 78x + 6

78x- 166 = 78x

-166 = 0

Не верно

Answer 2

39(2х-4)-14=2×(39х+3)
78х-156-14=78х+6
78х-78х=6+156+14
0=176
не верно.